Ceiling lamp



FIG. 1 is a front view of my new design relating to a ceiling lamp;

FIG. 2 is a left side view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a three-quarter top view in perspective thereof. 

The ornamental design for a ceiling lamp, substantially as shown. 